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(No Model.) 2 Sheets-Sheet 1.

L. JOHNSON.

OSGILLATING ENGINE.

No. 391,618. Patented Oct. 23, 1888.

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L. JOHNSON.

V OSGILLATING ENGINE. No. 391,618. Patented Oct. 23, 1888.

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LOUIS JOHNSON, OF MILWAUKEE, WISCONSIN, ASSICNOR OF ONE-FOURTH TO THE WVILKIN MANUFACTURING COMPANY, OF SAME PLACE.

OSCILLATING ENGlNE.

SPECIFICATION forming part of Letters Patent No. 391,618, dated October 23, 1888.

Serial No. 269,135. (No model.)

To ail whom it may concern.-

Be it known that I, LoUIs JOHNSON, of Mil waukee, in the county of Milwaukee, and in the State of \Visconsin, have invented certain new and useful Improvements in Oscillating E11- gines;andIdoherebydeclare that thefollowing is a full, clear, and exact description thereof.

My invention relates to oscillating engines; and it consists in certain peculiarities of con- IO struction and combination of parts, to be hereinafter described with reference to the accompanying drawings, and subsequently claimed.

In the drawings, Figure 1 represents a side elevation of an engine constructed according [5 to my invention; Fig. 2, a plan view of the same; Fig. 3, a section on line 3 3, Fig. 2. Figs. 4 and 5, sections taken, respectively, on lines 4 4. and 5 5, Fig. 3; Fig. 6, a section on line 6 6, Fig. 5; Fig. 7, a section on line 7 7,

Fig. 3; Fig. 8, a section on line 8 8, Fig. 4; and

Fig. 9, a section on line 9 9, Fig. 3.

Referring by letter to the drawings, A represents the frame of my engine, said frame being cast in one piece with or otherwise suitably secured to a transverse axle, B, that is hollow I throughout its length and divided by a longitudinal partition, a, into two channels, I; b, that respectively communicate with ports 0 0, leading from the chamber C of a throttle-valve,

0 D, said chamber being provided with a steam inlet, E, and an exhaust-outlct, F.

Arranged on the ends 61 of the axle B are hubs c e, that respectively form part of cylinders G G, in which work pistons H H, that 5 have their rods I I wristed to wheels J J on opposite ends of a main shaft, K, that has its hearings on the frame A and carries a fly-wheel or belt-pulley, L. The journal-box of each cylinder is composed of two Babbitt-metal or a e other anti-friction sections, f f, one of these sections being recessed to engage a lug, e, extending inward from the bore of the hub e, and a set-screw, G, impinges against the other section to take up wear, and thereby keep said 5 cylinder in its true position.

To the heads of the cylinders G G are socured rods M H, that serve as guides for sleeves N N on the forward ends of the pistonrods I I, and the outer wall of each cylinder is provided with channels g that are sepa rated from each other by a partition, h, and respectively communicate with the bore of said cylinder at the front and rear, as best illustrated by Fig. 5. The outer wall of each cylinder is also provided with a series of radial ports, H m n, for communication with similar ports, i j m a, in a hollow valve, O, that is bolted to the adjacent end of the axle, and bolted or otherwise suitably secured to said cylinder is a steam-chest, P, that incloses the valve. The valve 0 is divided into two chambers, 0 o, by a partition, q, and through this partition and outer wall of said valve is bored an opening, 1), that registers with a channel, r, in the axle B, said channel being connected by a pipe, 5, with the steam-inlet E above the throttle-valve. By the construction just described live steam is admitted to the chest P on each cylinder to exert a back-pressure on the valves 0 inclosed therein. The piston- 7c rods I I are set at quarters with relation to the wrist-wheels J J, and consequentlyin the operation of my engine there can be no deadcenter.

.Vhen the throttle-valve D is in the position 7 shown in Fig. 9, the live steam from the inlet E passes through said valve and down through the port or ports 0 into the channel 5 in the axle B, and then, as shown by the arrows,Fig. 8, this steam diverges in opposite directions and enters the chambers 0 0 in the valves O 0. Now if both these valves be open the ports j. therein will register with the ports j,

leading to thechannel g in the outer walls of the cylinders, and the live steam from the valve-chambers will enter the bore of each cylinder at its forward end. The parts being in the position described, the ports a of the valves 0 are in register with the ports it, leading to the channels 9 in the outer walls of the 0 cylinders, and the exhaust-steam from the lat ter passes out through said ports and the channel b in the axle A to the outlet F, the partitionsctq in said valves and axle preventing any intermingling of the live and exhaust steam. 5 The piston-rods I I being wristed to the wheels J J, the cylinders G G are oscillated on the axle B by the movement of the pistons H H, and at certain times said cylinders individu- V ally come upon a center. Supposing one of Ice the cylinders to be on a center, all the ports ports n m in the valve 0 of the adjacent steam chest 1?. The live steam now enters the first cylinder through the ports n'n and channel 9, and the exhaust-steam passes out through the channel g and ports m m into the chamber 0 of the valve O,from whence it escapes through the channel I) in the axle A to the outlet F. By the operation above described it will be seen that when one set of the valve-ports are open for live steam the set diametrically opposite are open for the exhaust, these opposing sets of ports being on opposite sides of the partition q in said valve. When the throttlevalve 1) is drawn out,the channel 12 in the axle A becomes the livesteam passage leading to the valves and the channel I) the passage for the exhaust-steam from the cylinders, the operation of the engine being then reverseto that above described; or, in other words, such channels and ports that were formerly open to the live steam are now open to the exhaust,and vice versa.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an oscillating engine, the combination of a suitably-inelosed hollow valve divided into two chambers and provided with radial ports, an oscillating cylinder, also provided with radial ports that come in and out of register with those in the Valve and communicate with channels leading into the respective ends of the cylinder-bore, a steam-inlet communicating with one valve-chamber, and an exhaustoutlet leading from the other valve-chamber, substantially as set forth.

2. In an oscillating engine, the combination of a suitably-inclosed hollow valve divided into two chambers and provided with radial ports, an oscillating cylinder, also provided with radial ports that come in and out of register with those in the valve and communicate with channels leading into the respective ends of the cylinder-bore, an opening through the chamber separating partition and outside wall of the Valve, arranged to communicate with a steam-inlet, whereby a back-pressure is exerted against said valve, a steam-inlet com municating with one valve-chamber, and an exhaustoutlet communicating with the other valve-chamber, substantially as set forth.

3. In an oscillating engine, the combination of a suitably-inclosed hollow valve divided into two chambers and provided with radial ports, an oscillating cylinder, also provided with radial ports that come in and out of register with those in the valve and communicate with channels leading into the cylinder-bore,

a steam-i nlet leading to one val vechamber, and an exhaust-outlet leading from the other valvechamber, and the several ports so arranged that when one set thereof are taking steam the set diametrically opposite are open to the exhaust and separated from the former set by the partition that divides said valve into chambers, substantially as set forth.

4. In an oscillating engine, the combination of a bearing provided with channels that communicate with inlet and outlet ports, a cylinder loosely mounted on the bearing and provided with channels that lead into its bore, a steam-chest secured to the hub of the cylinder, and a hollow valve bolted or otherwise rigidly secured to the bearing and divided into two chambers that respectively communicate with a channel in said bearing and have ports that come in and out of register with other ports leading to the channels in the oscillating cylinder, substantially as set forth.

5. In an oscillating engine, the combination of a bearing provided with channels that communicate with inlet and outlet ports, a cylinder loosely mounted on the bearing and provided with channels that lead into its bore, a

steam-chest secured to the hub of the cylinder,

and a hollow valve stationary in the chest and divided into two chambers that respectively communicate with a channel in the bearingand have ports that come in and out of register with other ports leading to the channels in the oscillating cylinder, substantially as set forth.

6. In an oscillating engine, the combination of a bearing provided with channels that communicate with inlet and outlet ports, a throttle-valve for controlling these ports, a cylinder loosely mounted on the bearing and provided with channels that lead into its bore, a steam-chest secured to the hub of the cylinder, and a hollow valve stationary in the chest and divided into two chambers that respectively communicate with a channel in the bearing and have ports that come in and out of register with other ports leading to the channels in the oscillating cylinder, substantially as set forth.

7. In an oscillating engine, the combination of a bearing, a cylinder provided with a hub having a lug upon its bore, a sectionaljournal-box inserted in the hub-bore to surround the bearing, and having one of its sections recessed to engage said lug, and a set-screw arranged in the cylinder-hub to impinge against the nonrecessed section of said journal-box, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Wisconsin, in the presence of two witnesses.

LOUIS JOHNSON.

\Vitncsses:

H. G. UNDERWOOD, N. E. OLIPHANT. 

